Ventilating means for laminated cores.



A. J. BROWN.

VENTILATING MEANS FOR LAMINATED CORES.

APPLIOATION FILED OOT. 19, 1905.

925,991. Patented June 22,1909.

L. L. L

F [NVENTURI Mam/asses: HT Art/zurJfiwu/n 14 BY Y WW' V UNITED STATES enrich.

ARTHUR JAMES BROWN, OF NORWOOD, OHIO, ASSIGNOR TO THE BULLOCK ELECTRIC MANUFACTURING COMPANY, A CORPORATION OF OHIO.

VENTILATING FOR CORE-F5.

T 0 all whom it may concern:

Be it known that l, ARTHUR J. Bnown, citizen of the United States, residing at Norwood, in the county of Hamilton and State of Ohio, have invented certain new and useful improvements in Ventilating Means for Laminated Cores, of which the following is a full, clear, and exact specification.

My invention relates to spacing members for the laminae of cores of dynamo-electric machines.

The object of my invention is to provide a spacing member which will be easily and cheaply made and one which will not interfere with the free circulation of air through the ventilating passage-ways in the cores.

In carrying out my invention 1 provide a s )acing member for laminae of .dynamoelectric machines which comprises a member U-shaped in cross section and having laterally extending wings or projections.

Considering my invention from a more specific standpoint it consists of a spacing member for a laminated core of a dynamoelectric machine comprising a core plate having laterally extending lips unched therefrom, and a plurality 0 channe -shaped rib members having Wings or projections held to the core plate by the lips, which are bent over the wings or projections.

For a better understanding of my invention reference is had to the accompanying drawing in which Figure 1 is a face view of a portion of one of my s acing members,- Figs. 2, 3 and a are face, si e and plan views res ectively of one of the rib members employe in my spacing device; Fig. 5 is an edge view of one of the core punchings to which the ribs are attached; and Fig. 6 is avi'ew of two groups oi laminae of a core separated by a spacing member embodying my invention.

Reterring'to the figures of the drawing, 1 have shown at 10 groups of lamina of a core of a dynamo-electric machine separated by my spacing member. The core may be either that of a stationary or rotary member. A11 end plate 11 of each group, one of which is shown in Fig. 1, is provided with a number oi" lips or projections 12, punched from the body -'oi the plate. The plate may be circular in shape, or may be a shortse mentwhich is arranged end to. end with 0t ier similar segments to encircle the core. The lips or pro j ections 12 are arranged in two rows as shown Specification of Letters Patent.

application'filed octane: re, 1905.

- Patented June 22, rec-e.

Serial ire. 283,531).

and are preferably punched in the plate at the same time that the latter is cut from the sheet metal. These lips or projections hold the spacing ribs 13 as shown.

Each spacing rib 13 is preferably made of sheet metal and consists of a plate having portions laof its outer edges bent at right angles thereto, forming two U-sha ed or channel-shaped portions separated y two laterally extending wings or projections 15. If desired the core late 11 may be provided with a plurality oi groups of lips and each spacing rib may be provided with more than one pair of wings or projections, or there may be but a single wing extending from one side only. For ordinary sized machines, however, a single pair of holding wings is preferable. Also, if the core late is of large size, two such spacing mem ers may be arranged end to end in a radial line. Each spacing member 13 is reierably punched in the shape shown, that IS, with the U-sha ed portions 14 and the wings 15, by a sing e operation, suitable dies being provided for that purpose.

The lips 12 of the plate when punched from the plate 11 extend at right angles thereto, as is shown at the right hand side of Fig. 1. Each s acing member is held to the core plate by our of the lips, which are bent over the Wings of the spacing ribs as shown in the drawing. Thus the parts will be securely held together. it wil be seen that the spacing ribs '13 can be easily and qgliicldy made and can be easily fastened to t e core plate. it will also be seen that the members 13 will not interfere with the free circulation of air through the passage-ways between the groups of laminse since the air can flow freely through the member 13 itself.

I do not Wish to be confined to the details shown, but aim in my claims to cover all modifications which do not depart from the spirit and scope of my invention.

W hat I claim as new and desire to secure of its outer edges bent at right angles to its.

ire

base, and other portions unbent to form holding Wings.

3. A spacer for laminated cores of dynamoelectric machines, comprising a sheet metal punching havin portions of its sides bent outward at rig t angles forming two U- shaped portions and two flat holding Wings or projections.

4. A spacing member for laminae of dynamo-electric machines, consisting of a core plate having lips or projections, and a U- shaped member having one or more laterally extending Wings, said lips being'bent over said Wingor wlngs.

' 5. A spacing member for laminated dores of dynamo-electric machines, comprising a core punching provided With inte ral punched lips or projections, and a plura ity of sheet metal Ushaped members havin one or more Wings or arms each engaged y a plurality of said lips .or projections.

. 6. in a laminated core of a dynamo-electric machine, a spacing member, consisting of a core plate having laterally extending li s punched therefrom, and a plurality of d etachalole channel-shaped rib members having one or more Wings or projections, said lipseaaeer being bent over the Wings whereby the members will be held to the core late.

7. A spacing member for aminated cores of dynamo-electric machines, comprising a core punching provided with a plurality of outwardly extending lips, and a lurality of sheet metal rib members, each 0 said members consisting of a strip restin against the face of the core punching and havin laterally extending Wings, and portions ent at right angles thereto and to the punching, said Wings being engaged by the lips of the core plate, whereby the ribs will he held to the core punching.

8. A spacer for laminae of dynamo-electric machines, comprising a straight metal strip havin its edges bent at right angles to its base a ong part of its length, While along the remainder of its length its edges remain unbent to form holding wings.

In testimony whereof I affix my signature, in the presence of two witnesses.

Alt'li llllt JAMES BRGWN.

Witnesses l nnn J. KINSEY, An'rnnn F. Ktvrs. 

